Re: [conduit] [Ncep.list.pmb-dataflow] Large lags on CONDUIT feed - started a week or so ago

  • To: "Person, Arthur A." <aap1@xxxxxxx>
  • Subject: Re: [conduit] [Ncep.list.pmb-dataflow] Large lags on CONDUIT feed - started a week or so ago
  • From: Anne Myckow - NOAA Affiliate <anne.myckow@xxxxxxxx>
  • Date: Thu, 28 Mar 2019 17:28:26 -0400
Hello Art,

We will not be upgrading to version 6.13 on these systems as they are not
robust enough to support the local logging inherent in the new version.

I will check in with my team on if there are any further actions we can
take to try and troubleshoot this issue, but I fear we may be at the limit
of our ability to make this better.

Iâll let you know tomorrow where we stand. Thanks.
Anne

On Mon, Mar 25, 2019 at 3:00 PM Person, Arthur A. <aap1@xxxxxxx> wrote:

> Carissa,
>
>
> Can you report any status on this inquiry?
>
>
> Thanks...          Art
>
>
> Arthur A. Person
> Assistant Research Professor, System Administrator
> Penn State Department of Meteorology and Atmospheric Science
> email:  aap1@xxxxxxx, phone:  814-863-1563 <callto:814-863-1563>
>
>
> ------------------------------
> *From:* Carissa Klemmer - NOAA Federal <carissa.l.klemmer@xxxxxxxx>
> *Sent:* Tuesday, March 12, 2019 8:30 AM
> *To:* Pete Pokrandt
> *Cc:* Person, Arthur A.; conduit@xxxxxxxxxxxxxxxx;
> support-conduit@xxxxxxxxxxxxxxxx; _NCEP.List.pmb-dataflow
> *Subject:* Re: Large lags on CONDUIT feed - started a week or so ago
>
> Hi Everyone
>
> Iâve added the Dataflow team email to the thread. I havenât heard that any
> changes were made or that any issues were found. But the team can look
> today and see if we have any signifiers of overall slowness with anything .
>
> Dataflow, try taking a look at the new Citrix or VM troubleshooting tools
> if there are any abnormal signatures that may explain this.
>
> On Monday, March 11, 2019, Pete Pokrandt <poker@xxxxxxxxxxxx> wrote:
>
> Art,
>
> I don't know if NCEP ever figured anything out, but I've been able to keep
> my latencies reasonable (300-600s max, mostly during the 12 UTC model
> suite) by splitting my CONDUIT request 10 ways, instead of the 5 that I had
> been doing, or in a single request. Maybe give that a try and see if it
> helps at all.
>
> Pete
>
>
>
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133526700&sdata=rISFh7zNHrOY%2B4K4qBEqwtB2zq%2B0IE4l%2FmqYXRAcM6A%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
>
> ------------------------------
> *From:* Person, Arthur A. <aap1@xxxxxxx>
> *Sent:* Monday, March 11, 2019 3:45 PM
> *To:* Holly Uhlenhake - NOAA Federal; Pete Pokrandt
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* Re: [conduit] Large lags on CONDUIT feed - started a week or
> so ago
>
>
> Holly,
>
>
> Was there any resolution to this on the NCEP end?  I'm still seeing
> terrible delays (1000-4000 seconds) receiving data from
> conduit.ncep.noaa.gov
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fconduit.ncep.noaa.gov&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133536705&sdata=5DIx0hfLu7Q1FxggAkcsn3845ayF0rfUUbnAADYjblY%3D&reserved=0>.
> It would be helpful to know if things are resolved at NCEP's end so I know
> whether to look further down the line.
>
>
> Thanks...           Art
>
>
> Arthur A. Person
> Assistant Research Professor, System Administrator
> Penn State Department of Meteorology and Atmospheric Science
> email:  aap1@xxxxxxx, phone:  814-863-1563 <callto:814-863-1563>
>
>
> ------------------------------
> *From:* conduit-bounces@xxxxxxxxxxxxxxxx <conduit-bounces@xxxxxxxxxxxxxxxx>
> on behalf of Holly Uhlenhake - NOAA Federal <holly.uhlenhake@xxxxxxxx>
> *Sent:* Thursday, February 21, 2019 12:05 PM
> *To:* Pete Pokrandt
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* Re: [conduit] Large lags on CONDUIT feed - started a week or
> so ago
>
> Hi Pete,
>
> We'll take a look and see if we can figure out what might be going on.  We
> haven't done anything to try and address this yet, but based on your
> analysis I'm suspicious that it might be tied to a resource constraint on
> the VM or the blade it resides on.
>
> Thanks,
> Holly Uhlenhake
> Acting Dataflow Team Lead
>
> On Thu, Feb 21, 2019 at 11:32 AM Pete Pokrandt <poker@xxxxxxxxxxxx> wrote:
>
> Just FYI, data is flowing, but the large lags continue.
>
>
> http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?CONDUIT+idd.aos.wisc.edu
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Frtstats.unidata.ucar.edu%2Fcgi-bin%2Frtstats%2Fiddstats_nc%3FCONDUIT%2Bidd.aos.wisc.edu&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133536705&sdata=KqSHAeB6XYUOR2tVzRRSdMCzVahKVPOiPzvC9xoHMBU%3D&reserved=0>
>
> http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?CONDUIT+conduit.unidata.ucar.edu
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Frtstats.unidata.ucar.edu%2Fcgi-bin%2Frtstats%2Fiddstats_nc%3FCONDUIT%2Bconduit.unidata.ucar.edu&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133546714&sdata=I1mvCqaacew8DEknYPh3%2Fd69L6K2i6CtIKpgHDz9GT8%3D&reserved=0>
>
> Pete
>
>
>
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133546714&sdata=pvl82se6O%2Fvtzi4DBKM%2F0YrJALvDoPE4k3Nz9hSUyyk%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
>
> ------------------------------
> *From:* conduit-bounces@xxxxxxxxxxxxxxxx <conduit-bounces@xxxxxxxxxxxxxxxx>
> on behalf of Pete Pokrandt <poker@xxxxxxxxxxxx>
> *Sent:* Wednesday, February 20, 2019 12:07 PM
> *To:* Carissa Klemmer - NOAA Federal
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* Re: [conduit] Large lags on CONDUIT feed - started a week or
> so ago
>
> Data is flowing again - picked up somewhere in the GEFS. Maybe CONDUIT
> server was restarted, or ldm on it? Lags are large (3000s+) but dropping
> slowly
>
> Pete
>
>
>
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133556719&sdata=zcmqQMKWWa3YXEiNQyWYJFCPWCMFrR1kDC%2B8jMZgTuY%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
>
> ------------------------------
> *From:* conduit-bounces@xxxxxxxxxxxxxxxx <conduit-bounces@xxxxxxxxxxxxxxxx>
> on behalf of Pete Pokrandt <poker@xxxxxxxxxxxx>
> *Sent:* Wednesday, February 20, 2019 11:56 AM
> *To:* Carissa Klemmer - NOAA Federal
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* Re: [conduit] Large lags on CONDUIT feed - started a week or
> so ago
>
> Just a quick follow-up - we started falling far enough behind (3600+ sec)
> that we are losing data. We got short files starting at 174h into the GFS
> run, and only got (incomplete) data through 207h.
>
> We have now not received any data on CONDUIT since 11:27 AM CST (1727 UTC)
> today (Wed Feb 20)
>
> Pete
>
>
>
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133556719&sdata=zcmqQMKWWa3YXEiNQyWYJFCPWCMFrR1kDC%2B8jMZgTuY%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
>
> ------------------------------
> *From:* conduit-bounces@xxxxxxxxxxxxxxxx <conduit-bounces@xxxxxxxxxxxxxxxx>
> on behalf of Pete Pokrandt <poker@xxxxxxxxxxxx>
> *Sent:* Wednesday, February 20, 2019 11:28 AM
> *To:* Carissa Klemmer - NOAA Federal
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* [conduit] Large lags on CONDUIT feed - started a week or so ago
>
> Carissa,
>
> We have been feeding CONDUIT using a 5 way split feed direct from
> conduit.ncep.noaa.gov
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fconduit.ncep.noaa.gov&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133566724&sdata=zeEqXgG81kDQIcbzVlj78FXdyz2ld1LKhmVaYP9bA1M%3D&reserved=0>,
> and it had been really good for some time, lags 30-60 seconds or less.
>
> However, the past week or so, we've been seeing some very large lags
> during each 6 hour model suite - Unidata is also seeing these - they are
> also feeding direct from conduit.ncep.noaa.gov
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fconduit.ncep.noaa.gov&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133576734&sdata=yPlWPGkRjNuMQUHK6ZMz2CSOnt5GnyP0N5WBJ2Xl0n4%3D&reserved=0>
> .
>
>
> http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?CONDUIT+idd.aos.wisc.edu
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Frtstats.unidata.ucar.edu%2Fcgi-bin%2Frtstats%2Fiddstats_nc%3FCONDUIT%2Bidd.aos.wisc.edu&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133576734&sdata=g%2FWWKnNIJNPT4MRavn0YLNAUlKVBFl49%2Beipn5ftYkw%3D&reserved=0>
>
>
> http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?CONDUIT+conduit.unidata.ucar.edu
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Frtstats.unidata.ucar.edu%2Fcgi-bin%2Frtstats%2Fiddstats_nc%3FCONDUIT%2Bconduit.unidata.ucar.edu&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133586734&sdata=p%2F1GcWu%2FAJUQwg1qWexK5DgSQCEjUn1T2udhtx4fix8%3D&reserved=0>
>
>
> Any idea what's going on, or how we can find out?
>
> Thanks!
> Pete
>
>
>
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7C5bc029df8d3b49fe895008d6a6e67860%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636879906133596744&sdata=eFcuheAVvxEYMwwGes9fTTPts9sdGjFA2pQ0rpcDAdw%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
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>
>
>
> --
> Carissa Klemmer
> NCEP Central Operations
> IDSB Branch Chief
> 301-683-3835
>
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> Ncep.list.pmb-dataflow@xxxxxxxxxxxxxxxxxxxx
> https://www.lstsrv.ncep.noaa.gov/mailman/listinfo/ncep.list.pmb-dataflow
>
-- 
Anne Myckow
Lead Dataflow Analyst
NOAA/NCEP/NCO
301-683-3825